Measuring isospin mixing in 36Ar using a polarized, neutral atom trap

D. Melconian, D. Ashery, G. Ball, J. A. Behr, P. Bricault, B. A. Brown, M. Dombsky, K. P. Jackson, S. Fostner, A. Gorelov, M. N. Groves, S. Gu, M. R. Pearson, I. S. Towner, M. Trinczek, I. Vollrath

Research output: Contribution to journalConference articlepeer-review

Abstract

Magneto-optical traps provide a cold, compact cloud of radioactive atoms and therefore are an ideal source for use in precision nuclear β decay studies. Optical pumping techniques can add a new dimension to such experiments by efficiently polarizing these samples to ≳99%. TRIUMF's experiment E925 is utilizing these techniques to prepare to measure the isospin mixing between the first two Iπ=2+ excited states of 36Ar with the lowest 2+, T=1 isobaric analog state. The spin-polarized 36K β+ decay observables will be measured using TRIUMF's neutral atom trap at ISAC, TRIUMF's isotope separator and accelerator facility. The main purpose is to test isospin mixing models in the s,d-shell needed for determination of the superallowed Fermi strength in 0+→0+ decays.

Original languageEnglish
Pages (from-to)540-543
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume204
DOIs
StatePublished - May 2003
EventEMIS-14 - Victoria, BC, Canada
Duration: 5 Jun 200210 Jun 2002

Keywords

  • Isospin mixing
  • Magneto-optic trap
  • Nuclear β decay
  • Polarization

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